Improvement in whip-stocks



L. HEYWOUD.

Whip-Stocks.

Patented 1an. 14,1873.

AM Film-LITHOGRAPHIE C0. N. XSBORNEIS PROCESS,

UNITED STATES PATENT OFFICE.

LEvI HEYwooD, or GARDNER, MASSACHUSETTS, ASSIGNCE To HIMSELE AND ELIzA T. wATKINS, or SAME PLACE.

IMPROVEMENT IN WHIP-STQCKS.

Specication forming part of Letters Patent N0. 134,802, dated January 14, 1873.

y To all whom it may concern:v

Beit known that I, LEVI HEYwooD, of Gardner, in the county of Vrcester and State of Massachusetts, have invented a new and Im` proved Whip; and that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this specification.

This invention isfin the'nature of an improvement in theconstruction of whips, whereby a new and useful article of manufacture is produced 5 andthe invention consists in filling the cells or pores ofthe wood constituting the whipstock with an elastic, semi-elastic, or stiff substance, thereby increasing the elasticity, toughness, and strength of the wood.

In the accompanying drawing, Figure lis a side elevation of whip with charged stock; Fig. 2, a cross-section of stock uncharged 5 and Fig. 3, a cross-Section of Stock charged.

To construct my whip, a piece of wood of any convenient and suitable size and quality-or, if desired, rattan-is selected and placed in a vessel wherein a vacuum has been formed by pumps or otherwise, when steam is admitted to the lower ends of the wood, which drives from its pores the resinousv or glutinous substances with which it is lled. (This primary operation may be omitted when rattan and other woods having large and well-delned pores are used.) Into an air-tight receiver of metal is now placed a solution of India rubber or gutta-percha and naphtha or collodion in a uid state, or. any other solution containing a solid elastic substance in suspension. The receiver is now closed and pressure applied in any desirable manner, which forces the solution into the pores of the wood or rattan; the Wood or rattan then being removed from the vessel, it is exposed to artificial heat, which causes the surplus moisture to evaporate, and leaves the pores filled with the `elastic solid which it had held in solution.

If the wood has been charged with India rubber or its compounds it is subjected to the usual vulcanizin g process, which solidies the rubber Within the wood. The Wood being thus charged, it may be cut to the required Size and Shape of the desired Whip-stock, and can then be braided over by machine, the; same as is ordinarily done in the manufacture of whips.

It is obvious that the stock may, if desired, be first nished up and afterward charged, as before described. This I have found to be the best way of doing it.

A whip constructed as above described will be found to be exceedingly tough, elast-ic, and

Witnesses:

FRANCIS RICHARDSON, GHS. HEYwooD. 

